End ahl



Z w I'Y nul I I Patented May 17,1898.

0. F. NEBENDAHL. AUTOMATIC IGNITING DEVICE FOR GAS LAMPS, &c.

(No Model.)

CARL FRIEDRICH NEBENDAHL, OF WANDSBECK, GERMANY.

AUTOMATIC IGNITING DEVICE FOR GAS-LAMPS, 800.

SPECIFICATION forming part Of Letters Patent NO. 604,074, dated May 17, 1898. .Application filed August 31, 1897. Serial No. 650,191. (No model.)

To all whom it may concern:

Be it known that I, CARL FRIEDRICH N EB- ENDAHL, a subject of the German Emperor, and a resident of 'Wandsbeck, near Hamburg, in the Province of Schleswig-Holstein, Kingdom of Prussia, German Empire, have invented certain new and useful Improvements in Automatic Igniting Devices for Gas Lamps or Lanterns, of which the following is a specification.

The present invention is an automatic ignitin g device for gas-lanterns, to be actuated by a float which sets the lamp in and out of 1 action as soon as the pressure of the gas de-j spatched from the main increases or decreases by having a pendulum or bell-crank valve acted upon in such a manner that it closes off the channel of the igniting-tube when the pressure of the gas is increased after having opened the feeding-channel of the lightingflame and after the latter has been ignited by the igniting-flame, and that it (the bellcrank valve) closes off the feeding-channel of the lighting-flame whenever the pressure of the gas is reduced, after having opened the igniting-channel and produced the ignitingflame. It is presumed for this invention that the difference in the height of pressure amounts at least to five millimeters. The admission of higher differences of pressure is unlimited, and in such cases a reduction during the operation of the lamp is of no consequence. The operation of the new apparatus remains the same at all degrees of pressure. The apparatus is adjusted by the weight of the float in such manner that the lighting-flame disappears and the igniting-flame appears during the day-pressure of the gas. The equivalent of one millimeter gas-pressure is two grams. If, for instance, it is intended to extinguish at a certain time at a day-pressure of twenty millimeters a certain number of lamps and to have another certain number of lamps left burning, the weight on the floating body of the igniting device will have to be increased to the extent of ten grams and the pressure must increase at least from twenty to thirty millimeters. .It is obvious that these lamps will only start burning after the pressure has risen to thirty millimeters and that they will become extinguished if the pressure decreases to twenty-five millimeters. A greater difference in the pressure insures theigniting device being more reliable and indifferent to and not affected by variation. of pressure, vibration, or shaking.

latter leading to the burner 13 and to the light.

ing-flame, respectively, which (Z7) ends with a tube 12 in a casing c, filled with glycerin or other liquid. A floating bell cl is arranged in the casin g c, the weight of which is reduced as far as necessary by virtue of a cork ring dt or the like, which helps to buoy it up. The floating bell which is immersed in the liquid is soarranged over the tube b that the gas therefrom will lift the floating bell more or less, according to the pressure of the gas.

The floating body dis connected to the spindle f of the lever-valve g, which is arranged in the chamber (1 by means of arode, rail, or the like, whereby the parts 6 f 9 form a bell-crank. The chamber a is connected to the gas-feeding tube a by means of the tube (1. Adjustable channels it and 2', which are screwed to the chamber-jacket or adj ustably arranged in any other suitable manner, lead to the burner-tube B and to the igniting-tube or igniting-channel Z, respectively.

If the floating bell falls, the lever g presses against the channel it; but if the floating bell rises the lever g presses against the channel '5 in order to shut off in both cases the feeding of gas to the burner-tube B and the igniting-channel Z, respectively. The lift or rise of the bell is therefore limited by the lever g, the turn of the latter being determined and regulated by the adjustment of the channel 71. and 2'. The gas-tight connection between the lever g and the channels it and 2' is obtained by a packing substance arranged in theleverfor instance, lead gagainst which the channels h and t" are pressed to prevent an escape of gas, which would cause the lamp to be ignited.

In cases of removed counter-pressure-i. e. when the immersion of the floating bell d does not correspond to the pressurea suitable valve 19 is arranged upon the tube 1), the

body b of which would shut off the gas-outlet b automaticallyin such cases. A suitable protection-cap 0 forms the lid on top of the casing c for the floating bell. weights placed around a spindle d of the floating bell d in order to govern the weight of the bell, according to the gas-pressure.

To render the lighting-flame indifferent to and unaffected by variation in pressure and vibration and to enable the apparatus to turn the lever-seat even in very small differences of pressure, the pressure-conduit leading to the floating body, which actuates the shutting-off-valve device, is separated from the conduit leading to the flame, and energy and movement are suitably adjusted by means of a bell-crank, according to the requirements and the dimensions of the lamp.

Supposing the floating bell has been Weighted for a certain pressure, the shut-off cocks a and 13 being opened and the bellcrank valve 6 f g being in the position shown in Fig. 1, then the channel 72, feeding the flame, will be closed. Consequently the gas is flowing through the opened channel 2 and the igniting-tube Z to the igniting-flame. The igniting-tube having been once lighted, if it is desired to ignite the lamp it will only be necessary to increase the pressure of the gas. The floating bell will be lifted because of the increased pressure, and the bell-crank valve will shut off the channelz' after it has opened the channel It, leading to the lighting-flame, and after this latter has been ignited by the igniting-flame. When the gas-pressure is again reduced, the floating bell d and the crank-valve go back into the position illustrated in Fig. 1, whereby the feeding-channel h for the lighting-flame will be shut off after the igniting-channel has been opened and after the igniting-flame has been ignited. The lamp is then again extinguished and only the igniting-flame will be burning.

Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim isl. A gas-supply conduit, main and igniter burner passages communicating therewith through its vertical walls at diametrically opposite points, and a valve adapted to be moved by variations of the pressure in said conduit to close or open one ofsaid passages and open or close the other, for the purpose set forth.

2. A gas-supply conduit, main and igniter burner passages communicating therewith through its vertical walls at diametrically opare small.

posite points, and a loaded valve adapted to be moved by variations of the pressure in the conduit to close or open one of said passages and open or close the other, for the purpose set forth.

3. A gas-supply conduit, main and igniter burner passages communicating therewith through its vertical walls at diametrically opposite points,.a rocking valve adapted to be moved by variations of the pressure in said conduit to close or open one of said passages and open or close the other, and means for adjusting the amplitude of the rocking movements of said'valve, for the purpose set forth.

4- A gas-supply conduit, main and igniter burner passages communicating therewith through its vertical walls at diametrically opposite points, a rock-lever carrying a twofaced valve'at its free end, and appliances adapted to be controlled by variations of the pressure in the conduit and thereby rock the valve-lever and move its valve to close or open one of said passages and open or close the other, for the purpose set forth.

5. A gas-supply conduit, main and igniter burner passages communicating therewith through its vertical walls at diametrically opposite points, a valve, and appliances outside of the conduit connected with said valve and controlled by variations of the pressure in the conduit and thereby move the valve to close or open one of said passages and open or close the other, for the purpose set forth.

6. The combination with a gas-supply conduit, main and igniter burner passages communicating therewith through its vertical Walls, and a valve-lever carrying a two-faced valve at its free end, of a gas-holder, its bell in communication with said conduit and a connection between said bell and the valvelever, whereby the latter is rocked by variations of the pressure in the conduit to close or open one of the aforesaid passages and open or close the other, for the purpose set forth.

7. The combination with a gas-supply conduit, main and igniter burners in communication therewith through its vertical walls at diametrically opposite points, and a rock-lever carrying a valve at its free end adapted to close or open one of said passages and open or close the other; of .a gas-holder, its bell in communication with said supply-conduit, a connection between the bell and rock-lever whereby the latter is operated by variations of the pressure in the conduit, and apressurecontrolled valve adapted to control the flow of gas to the bell, for the purpose set forth.

8. A gas-supply pipe, main and igniter burner passages leading therefrom, a valveseat for each of said passages adjustable reciprocally, and a valve adapted to move from one seat to the other to open or close one of said passages and close or open the other, for the purpose set forth.

9. A gas-supply pipe, main and igniter burner passages leading therefrom, a valveseat for each of said passages adjustable remyinvention Ihave signed my name; in presoiproeally, and a valve adapted to move from en ce of two Witnesses, this 19th day of August, one seat to the other to open or close one of 1897.

said passages and close or open the other; CARL FRIEDRICH NEBEND'AHL. 5 said valve moved by variations of the pressure Witnesses:

in the supply-pipe, for the purpose set forth. MAX LEMOKE,

In testimony that I claim the foregoing as E. H. L. MUMMENHOFF. 

